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stdint - standard integer types
The types Vt int8_t , Vt int16_t , Vt int32_t , and Vt int64_t provide a signed integer type of width 8, 16, 32, or 64 bits, respectively. The types Vt uint8_t , Vt uint16_t , Vt uint32_t , and Vt uint64_t provide an unsigned integer type of width 8, 16, 32, or 64 bits, respectively. These integer types should be used when a specific size is required.
The types Vt int_fast8_t , Vt int_fast16_t , Vt int_fast32_t , and Vt int_fast64_t provide the fastest signed integer type with a width of at least 8, 16, 32, or 64 bits, respectively. The types Vt uint_fast8_t , Vt uint_fast16_t , Vt uint_fast32_t , and Vt uint_fast64_t provide the fastest unsigned integer type with a width of at least 8, 16, 32, or 64 bits, respectively. These types should be used when access speed is paramount, and when a specific size is not required.
The types Vt int_least8_t , Vt int_least16_t , Vt int_least32_t , and Vt int_least64_t provide the smallest memory footprint signed integer type with a width of at least 8, 16, 32, or 64 bits, respectively. The types Vt uint_least8_t , Vt uint_least16_t , Vt uint_least32_t , and Vt uint_least64_t provide the smallest memory footprint unsigned integer type with a width of at least 8, 16, 32, or 64 bits, respectively. These types should be used when memory storage is of concern, and when a specific size is not required.
The type Vt intmax_t provides a signed integer type large enough to hold any other signed integer. The type Vt uintmax_t provides an unsigned integer type large enough to hold any other unsigned integer. These types are generally the largest signed and unsigned integer types available on a specific architecture.
The type Vt intptr_t provides a signed integer type with the ability to hold a pointer to Vt void , that can later be converted back to a pointer to Vt void .
The type Vt uintptr_t provides an unsigned integer type with the ability to hold a pointer to Vt void , that can later be converted back to a pointer to Vt void .
Additionally, the
#include <stdint.h>
header defines some macros, but none of them are documented here.
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